Dialog 0 0 594 444 Dialog 110 340 341 32 Qt::Horizontal QDialogButtonBox::Cancel|QDialogButtonBox::Ok 230 50 256 192 a A 10 60 137 140 Edit Add column Remove column Add tuple Remove tuple buttonBox accepted() Dialog accept() 328 354 157 274 buttonBox rejected() Dialog reject() 396 360 286 274